Rubber stamp construction



July 25, 1933. F. L. BUCK RUBBER STAMP CONSTRUCTION Filed June 27, 1930 LIII a N i INVENTOR Ean/v Z .Bwc/c 77W% ATTORN EYS Patented July 25, 1933 near *sra'rss FRANK'L. BUCK, OF, FREEPOBT, NEW YORK RUBBER STAMP Application filed. 'June 27,

This invention relates to rubber stamps of the type which are commonly used in offices, banks or similar places, 'for various purposes, and particularly to those types of rubber stamps in which interchangeable date dies are employed as a part of the subject matter to be printed thereby.

At the present time, practically all rubberstamps of this character include a printing die which is adhesively fixed to a cushion backing, which backing is in turn adhesively secured'to a handled holder or mount. In addition to the fact that the construction set forth entails considerable labor and expense due to the adhesive connection of the elements, it is obvious that the die and its mount are designed to be permanently associated with each other so that each die requires a separate mount and handle of its own.

The present invention aims for one of its principal objects to provide an improved rubber stamp construction, in which the printing die is detachably carried by the mount, whereby a single mount may selectively receive a plurality of dies,'the subject matter of which varies and in which the die cushion is associated with the mount and with a cushion backing without resorting to adhesives.

The invention further comprehends an improved rubber stamp construction of the type in which interchangeable date dies are employed as part of the subject matter to be printed and in which said interchangeable date dies are directly associated with the printing die proper.

As a further feature, the invention resides in a rubber stamp construction in which the mount and handle are assembled in such a manner as to effectually prevent their separation or any relative movement therebetween.

A further feature and advantage of the invention resides in the provision of a rubber stamp construction in which the mount is designed to interchangeably receive-a plurality of printing dies, which permits of the storage and filing away of the dies not in active use, in a smaller amount of space than CONSTRUCTION 1930. Serial No. 464,344.

would be required for a plurality of complete stamps where the dies, mounts and handles are permanently associated.

Other objects of the invention reside in V the comparative simplicity of construction and mode of use of the stamp, the economy with which it may be produced and the general efficiency-derived therefrom.

With the above recited and other objects in view, reference is had to the following description and accompanying drawing, in which there is exhibited one example or embodiment of the invention, while the claim defines the actual scope of the invention.

In the drawing: V

Figure l is a collective perspective view illustrating the die removed from the mount and one of the interchangeable date dies removed from the printing die.

Figure 2 is a vertical sectional view with the parts in assembled relation, taken approximately on the line indicated-at 2-2 in Figure 1.

Figure 3 is a fragmentary vertical sectional view taken on the line 33 of Figure 2 in a plane approximately at right angles thereto.

Referring to the drawing by characters of reference, or holder designatedgenerally by the reference character A, which is provided with a handle B. The mount or holder is preferably constructed of metal or any other suitable material to provide a base wall 5 having marginal side and end walls 6 and disposed perpendicular to the base wall 5. The side walls 6 are provided with inwardly inclined terminals 8 to present a receiving opening of lesser width than the distance between the inner surfaces of the opposite side walls 6. In order to effectually secure the handle B to the mount or holder A and the stamp includes a mount to prevent relative movement therebetween,

V threaded extremity 11 of the bolt shank 9;

In practice, a lock washer 15 will preferably be interposed between the cap nut 14: and the outer end of the handle B. In

order to cover and conceal the bolt head 10 andto present a smooth flat inner "surface parallel to the base wall 5, a filler element 16 is arranged within the holder or ll'lOuDtA, said filler element being recessed as at 17 to accommodate the bolt head.

A suitable cushion backing 18 is arranged within the mount or holder, and thesame may be of any desired yieldable or compressible material- -The printing die, designated generally by the reference character C, which is constructed of rubber or other equivalent yieldable flexible material, is in thejnature of a block, the lower portion oi which is shaped to normally fit snugly within the holder or mount between the side and end walls and 7 and the cushion backing member 18. This lower. portion is provided with beveled shoulders 19 which conform to and snugly fit behind the inwardlyinclined terminals 8 of thesi'de walls 6, it being apparent that" r compressibility of the the yieldability material from which the printing die is constructed, permits of the forcing of the same into position within the mount or holder A. The printing die is formed with the usual raise type faces 20 defining the main characters to be printed by the stamp. .VVhere the stamp is of the type which includes -in terchang'eable type dies designated generally by the reference character D, such as, for instance, for printing dates, the main printing die C is formed with a groove or recess 21 which is formed with undercut side walls to receive the beveled shoulder portions 22 of the interchangeable dies D. Un-

'der this construction and arrangement, it is apparent that an improved rubber stamp construction has been set forth, in which a it is desired to produce printing dies having interchangeable type matter to be associated therewith, the expense oi producing such dies is reduced.

While there has been illustrated and described a preferred form of the invention, it is to be clearly understood that no limitation is made to the precise structural details,

but that modifications which fall within the scope of thenppended claim may be resorted to when found desirable.

What is claimed is:

In a rubber stamp, a hollow mount having a closed end and a restricted open end adapted to receive a compressible elastic die member, a handle for said mount having a non-circular axial bore, said mount having a sin'iilarly shaped opening in its closed end, a bolt of a crosssectional shape corresponding to'and extending through said handle bore and said mount opening with the head disposed within the mount and a nut threadedly engaging theouter end of the bolt which protrudes from the outer end of the handle.

FRANK L. BUCK. 

